Quote:
Originally Posted by tkeracer619
Dan, do you know of the proper procedure to use one of these for measuring copper concentration? My spectrophotometer has a range of 200-1000nm. I'm terrible at color comparison and have been using the Hanna Copper checker but since they don't recommend it in saltwater...
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I have no experience with copper testing but do have experience using Hanna Checkers for unintended purposes.
The Hanna Checker might not be recommended for saltwater not because the chemistry fails but because the instrument is calibrated with freshwater solutions. You seem to be comfortable with making standard curves. Make a standard curve in saltwater with a copper (II) salt using both the Hanna Checker and the spectrophotometer set at the wave length of the light source of the Hanna Checker (see the instruction card for this spec). That would quickly define what’s possible. If you need more random ideas, shoot me a PM.
Dan